CO2 accounts for about 76 percent of total greenhouse gas emissions Methane, primarily from agriculture, contributes 16 percent of greenhouse gas emissions and nitrous oxide, mostly from industry and agriculture, contributes 6 percent to global emissions All figures here are expressed in CO2equivalentsGreenhouse Gas Emissions from the Energy Sector The next image shows CO 2 emissions from fossil fuel combustion by country In 15, China's share was 28 percent of the world's CO 2, while the US share was 15 percent The next closest country, India, emitted about 6 percent of the CO 2 Clearly, to bring down global emissions from the energy 2 Reported 19 greenhouse gas emissions For the purposes of the GHGRP, a facility Footnote 6 is defined as an integrated facility, pipeline transportation system, or offshore installation An integrated facility is defined as all buildings, equipment, structures, onsite transportation machinery, and stationary items that are located on a single site